Having outgrown this facility, the congregation relocated to the mid-Wilshire district in 1925. This second building, located at 4th and New Hampshire, is now a Korean Presbyterian church.[3]

Following the trend of its congregants, who were moving in significant numbers to Beverly Hills and the Westside of Los Angeles, in 1956, Sinai Temple constructed its third facility at its current location at the corner of Wilshire Boulevard and Beverly Glen Boulevard in Westwood. The building has a striking interior marked by the use of stained glass; Eisenshtat's design has been compared to the work of Frank Lloyd Wright.[1] The building was expanded in 1998, under the supervision of architect Mehrdad Yazdani and Dworsky Associates.[1]

"Friday Night Live", a lively, music-driven Shabbat service intended to attract younger congregants, was initially developed by Rabbi Wolpe and musician Craig Taubman at Sinai Temple;[9] the concept is now replicated in other synagogues around the world.[3] In June 2006, a Friday Night Live service at Sinai Temple saw an appearance by evangelical Christian minister and author Rick Warren, Warren's first appearance as featured speaker in a synagogue.[10][11]

Sinai Temple has been notably impacted by the wave of Persian Jews who immigrated to the United States after the 1979 Islamic Revolution in Iran. Prior to this event, the congregation had been overwhelmingly composed of Ashkenazi Jews of Eastern European heritage. As many Persian Jews emigrated to Los Angeles, a substantial number joined Sinai Temple; over time the Persian Jews became more fully integrated into the congregation, which is now divided about evenly between Ashkenazim and Persians. Jimmy Delshad became the first Persian Jew to become president of Sinai Temple in 1990; in 2007 he was elected as mayor of Beverly Hills.[3][12]